Reddit mentions: The best power tool batteries & chargers

What is your budget?

<$20: a good book on caving, or some batteries. Lithium AA/AAA if they don't like rechargeables, AA/AAA NiMH if they do. I've had good luck with the brand Tenergy, which is sold in bulk by AllBattery.com. They're basically cheap Chinese imports but their QA is decent. (Source: I'm a professional photographer who's used them for years.) Go for the 2,500 mAh capacity. You might also consider a decent charger. More on that shortly.

<$50: One of the best chargers on the market is this bad boy, but it's somewhat expensive and only charges 4 cells at once. However, it charges them safely (not overcharging, not charging too fast, etc, which limits long-term life), can identify bad cells, and can charge almost any cylindrical battery out there, including the far superior 18650 cell, which is important for a good headlamp or flashlight. For a good headlamp, consider the ThruNite TH10 in neutral white for $40, or the same headlamp with a battery for $15 more. Note: this light doesn't use AA/AAA batteries; it uses the 18650 battery, which is slightly larger but 4 times the capacity of an AA battery and is able to discharge power fast enough to support amazingly bright lights. Every light I'm linking here supports multiple brightness modes, with a maximum brightness around 1,000 lumens, i.e. as bright as your car's headlights. They also drop to between 0.4 lumens and 1 lumen at their lowest setting, which will last for up to 70-ish days. Yes, really. That's a nice feature to have in a cave.

<$100: A good headlamp/flashlight. Most cavers I know are old-school when it comes to flashlights because they aren't aware of some of the incredible LED and battery innovations that have occured. Most of their headlamps are either small and underpowered or huge and bulky and... still underpowered sometimes. I'd recommend a ThruNite TC-12 v2 in neutral white. It also uses an 18650 battery. The light bundle I linked includes one battery and the light is USB chargable, though that charger I linked earlier will charge the battery faster.

You can add a helmet strap if you know they use a helmet. If you're looking for a headlamp instead of a flashlight, consider the ThruNite TH10 I linked earlier or the Nitecore HC30 in neutral white which is slightly more expensive. Nitecore and ThruNite are fairly similar, though in my opinion Nitecore looks more "tactical" while ThruNite's electronics are slightly better. Both are good companies, however.

<$150: If you decide to get a light and extra batteries, don't get any battery with a brand containing the word "fire". (Those brands are known for lying about the capacities and being fire risks.) I'd recommend a 4-pack of KeepPower 3,400 mAh 18650 batteries if you're going for that kind of batteries as they're a good brand and I own them myself.

Some other considerations: a nice base layer, i.e. thermal underwear. I'd strongly recommend merino wool as it's thin, light, and warm even when it's wet. Cost: $50-$100 per item for a top or bottom/long johns. And they'll always have a warm, fuzzy feeling when they think of you. ;-)

Get this one:

• AmazonSmile: Panasonic K-KJ17MCA4BA Advanced Individual Cell Battery Charger Pack with 4 AA eneloop 2100 Cycle Rechargeable Batteries: PANASONIC: Electronics
  
  It's a wall charger. The other "USB charger" Panasonic makes actually means it has a USB port on it. It doesn't take power from a USB port. I wish Panasonic's best charger DID take power from a USB port, but nothing is available for that yet. The best USB charger I could find is this one:
  
  
• VINNINGE / LADDA Battery charger and 4 batteries - IKEA
  
  The batteries it comes with are good, but still totally inferior to genuine standard Eneloops. However, they are the same NiMH chemistry as Eneloop batteries, so the charger for them WILL work with Eneloop batteries too.
  
  It's a high quality smart charger that does individual cell charging, complete with a thermal sensor, which I have never been able to find before. Someone on reddit told me about the IKEA Ladda charger, and I wish could remember who it was so I could ping them.
  
  Another charger worth looking at is from Olight. This is the smallest charger available that will work for most common battery types, including AA NiMH and AA-compatible 14500 lithium:
  
  
• Olight UC compact magnetic USB charger with EdisonBright BBX3 battery case for 18650/16340/14500/AA/AAA & more - AmazonSmile
  
  I'm skeptical it's as good as the Panasonic or Ladda charger, because the minimal way it connects to the battery terminal ends limits its ability to sense temperature, which is important for NiMH cells. So, I suspect the Ladda USB charger might be the better one, but I'm not 100% sure. Either way, the Panasonic wall charger in the link I provided is undoubtedly your safest, best choice if you don't require your charger to be USB powered.

I am nit sure if this charger does Aa and aaa, but bunch of eneloop batteries (best batteries you can get) and a charger is one of best investments I made, and I got it as my first purchase trough prime now app same day delivery to get $20 off first purchase of $50 bucks, so I got 16 Aa 14 aaa couple of converters and a smart charger for like 30 bucks.these and couple extra packs of batteries

Edit it does charge both aaa and aa and it's 2 individual chanels which is great for this price, as far as getting more batteries eneloop are best and Amazon branded ones are basically eneloop last gen rebranded which you can find on sale.

Short answer? Zebralight SC62w.

It uses 18650 batteries which you can get for about $11 a pop at illumn.com; Keeppowers 3400mah are the ones that we recommend here the most. It's also insanely compact and waaay brighter than you think it will be. It also has hands down the greatest user interface of any light.

You'll need a charger next. There are a lot of options here, but what I always keep in my bag is a simple Xtar MC1, it's simple, small, and it works great. Works with more than just 18650s as well.

I use a Nitecore i4 at home but that's because I have quite a few lights and like the extra simultaneous battery capacity.

The light will run you about $85. Illumn doesn't have them in stock, which is a bummer because that's my favorite store for this hobby, but other places (such as amazon) has them.

Battery is about $11, charge is another $11. So $107 for a great and simple setup.

Another option would be getting a headlamp/90 degree style light. I EDC one of those; the Zebralight H600w. It doesn't come with a pocket clip though so that's kind of a bummer. I use a Armytek Wizard pocket clip (thanks Killzoneflashlights.com!) with it and they might as well have been made for each other. Problem is they are sold out of the pocket clips and I don't know when they'll be getting more in. I've emailed Armytek's customer service and had one shipped to me for $13, but I'm not sure how open they are to shipping them to people who don't actually own the Wizard light that it's supposed to be for.

Another option for a headlamp style light is the Armytek Wizard Pro (get the warm light version). It's actually only a little bit larger than the ZL H600 and of course it comes with a pocket clip. I love mine and rotate between the H600w and the Wizard Pro frequently.

I've been looking for a way to disable my motion sensor in certain situations as well. The solution I came up with is to use a battery eliminator. Some Homekit motion sensors are battery operated. If you use something like this : https://www.amazon.com/Everlasting-Glow-93976-Convertor-Christmas/dp/B076MZQ42P/ref=pd_bxgy_23_2/143-0164372-5830675?_encoding=UTF8&pd_rd_i=B076MZQ42P&pd_rd_r=de79e105-3010-11e9-9f4b-9fb10f44f45c&pd_rd_w=gy2ee&pd_rd_wg=I99Qz&pf_rd_p=6725dbd6-9917-451d-beba-16af7874e407&pf_rd_r=TP78SMKT9EBY1Q50Y7JA&psc=1&refRID=TP78SMKT9EBY1Q50Y7JA, then you can plug motion sensor into an smart switch. Then, when you get into bed, you can use a smart button to turn the smart switch off. Also, you can then ask Alexa to turn the switch off/on as well. Various options can be found on this website: https://www.batteryeliminatorstore.com/index.php . You might be able to find AA battery eliminators on Amazon as well.

have had my Ryobi cordless drill for quite a few years and the batteries that came with it do not take a charge any more. They lasted for many years before finally dying. These Ohyesbat Ryobi P100 ONE+ 18V 1.5Ah NiCd Battery, works in my cordless Ryobi perfectly. It is almost like having a new cordless drill. This batteries are compatible with all past & present Ryobi & 18-Volt products. The batteries are just as strong as the ones that came with my cordless drill. I used it to drill some 3/4 inch holes in a four by four and the battery has plenty of power to do the job. It works like it did when the cordless was brand new. I am extremely happy with the battery and highly recommend it. https://www.amazon.com/dp/B01H6ABABY

I got this solar charger. 23000mAh. So far I've charged 3 gopro batteries, one VTC4, and my iphone and the 100% charge light on the unit hasn't even turned off. This thing is awesome so far.

Poweradd™ Apollo Pro 23000mAh High Capacity Solar Panel Multi... http://www.amazon.com/dp/B00F4KBA3M/ref=cm_sw_r_udp_awd_BdYhub00RTQJF

Then I got this 18650 charger. Works well but it took 3 hours to charge one battery. And when I checked it, the battery was at 4.22 volts. Kinda makes me nervous but I'll keep an eye on them.

XTAR MP1S Intelligent USB 14650/17670/18650/18700 Battery Charger(No adaptor) https://www.amazon.com/dp/B00AIG8Q7U/ref=cm_sw_r_awd_shYhub03V9GBS

I has two other Xtar chargers and they're amazing. So I trust the company.

Thanks, I've noticed that the Elgoo kit I'm interested in includes a DS3231 module. I appreciate the advice!

In other news, I think I can solve my wife's problem with this:
https://www.amazon.com/gp/product/B076MZQ42P
And this:
https://www.amazon.com/dp/B014SGCIR4

So I'll do that-- and then I'll get into Arduino anyway because I like the idea of creating things that work exactly how I want them to work. Surely this will end well.

With 1.3ah batteries?! Your poor batteries. I never use mine with anything smaller than a 4ah. If you are looking to future proof go with Dewalts Flexvolt version :-D but really that is overkill for you. I would probably start with a good 4 or 5ah battery and see how that lasts you. This is a pretty good deal.
https://www.amazon.com/DEWALT-DCB204-2-Premium-Li-Ion-Battery/dp/B00BQHOI6S
XR never hurts if you can afford it.

You should know about lithium replacement batteries for your Roomba. The electronics are a bit tricker to design, but it seems companies are getting better at it. It looks great in theory too -- the batteries are lighter (more runtime), hold more energy (again, more runtime), and last for more cycles. This one averages 4.5 stars over 71 ratings. I've had one a few months and the battery life is unbelievable.

Also, wifi controllers are the ultimate in Roomba pimpage these days. Check out the RooWifi (available now) and the Thinking Cleaner (currently being Kickstarted).

After looking around some, I'm not sure there are primary 18650's. I also don't really see the motivation for a primary here. You haven't said if you want to save money, weight or what. Is the goal to throw them away when you're done? Like /u/cosmic_butter_cpu said, a solar charger with some rechargeables would be the best option. Here's a smart adapter which is commonly bought with solar cells (if you look at the "commonly bought with" section).

If you already have 20v kit, Dewalt makes an adapter so you can use 20v batteries in 18v tools. Look around, I know a few months ago most tool supply companies were selling most 18v tools/batteries at a deep discount.

If you're willing to spend more and get new, right now is the time to buy. You can get a brushless 3 speed impact and hammer drill, that comes with a 2.0ah and a 6.0ah flexvolt (their next gen battery system) battery for $380. In addition you get 2 free tools (20v bare tools or 20v batteries).

The best package I would say is the impact + drill, with a free circular saw and 2-3.0ah batteries.

Edit: If you don't have 20v; I just saw this kit, you can get an adapter with 2-2.0a batteries and charger for $105. Probably the best solution and will give you extra 20v batteries if your 18v tools die.

Amazed people still use non recharable batteries. My suggestion would be to invest in 8 good quality recharable batteries like Eneloops and just swap them from the charger to controller when required.

I personally bought this package maybe 5 years ago and the batteries are still going strong in my xbox controllers and other devices.

https://www.amazon.com/Panasonic-KJ17MCC82A-Eneloop-Advanced-Individual/dp/B00JHKSLSW/ref=sr_1_14?ie=UTF8&qid=1510351864&sr=8-14&keywords=eneloop+aa

Make sure you get similar batteries if you choose another brand that hold a charge for a long time. The cheaper rechargables go flat very quickly even without use. I think eneloops and similar ones can hold charge for 10 years even if just sitting there.

Color changing fiber optic lights wired to a hidden battery pack in your back pocket. Or color changing LEDs. I know there are LEDs that you can get in a multitude of colors or even selectable ones, I can't imagine that fiber optics would be difficult to find as well. I'll try to find some links.

Edit: Okay, so here's what we've got.

• [Your fiber optic strands]
  (http://www.amazon.com/PLASTRUCT-92505-Fibre-Optics-PLSU2505/dp/B0006O6X8S/ref=zg_bs_5486433011_6)
  
  
• Your LEDs
  
  
• Your power source
  
  You'll likely need some electrical tape and maybe a soldering iron, and some length of wire. I'm on my phone so forgive me for not knowing ahead of time, but you'll need to use the right type of battery: the LEDs come with 200 ohm resistors, so you'll need to match that up to an appropriate power source using V=IR.
  
  Maybe you'll also be able to find a hosting to hold together your cables and the LED(s) but if you can't then I think you can just tape them right up. If all goes well, take the fiber optic strands and feed some through the cape, maybe tape or adhere some strategically along the bottom so they poke out, and maybe let some dangle.
  
  Good luck if you give it a go!

Not sure if they are still making them, but it's pretty awesome.

I bought mine for around $200, but apparently they're up to almost $400 on amazon.

One thing you have going for you is that they're nicads and older tech with less actual tech built in to the battery. Newer LiIon ones the battery itself is pretty smart and I wouldn't trust 3rd party.

One thing you have going against you is that's an obsolete battery platform, so any money you throw towards it feels wasted.

If it's just the one drill, I'd shop for a new drill. Get something current-gen. Even a current-gen lithium-ion 12v drill will likely be as powerful as your older nicad 18v--and much smaller/cheaper.

If you had a lot of tools that were still useful, you could look in to a battery adapter to let you buy new LiIon batteries that you could eventually use in new tools.

If money is tight, though, I'm sure the 3rd party nicad will work just fine--they're really not that complicated compared to the new smart ones.

It is pretty easy. If you consider more on price, you can get a brand tools such as Ryobi or dewalt version on a secondary market, then go tio amazon finding a substitute battery, that cost less and cost-effective. I can recommend you a amazon store which I purchased many batteries--Topbatt. BATT.https://www.amazon.com/dp/B013UL5H8U

If you won't mind the price, then you can get a new set tools on the official website.

In your situation, I'd definitely look hard at the DCA1820 adapter.

https://www.amazon.com/DEWALT-DCA1820-Dewalt-Battery-Adapter/dp/B016K1UD0E

Lets you use the new XR Li-ion batteries in your existing XRP tools.

There are also some knock-off clones of the DCA1820 on ebay and amazon for half the price or less, which are getting decent reviews and seem to work OK.

This will allow you to get much better batteries, and then start phasing in new tools as you need them.

Panasonic KJ17MCC82A eneloop Power Pack, 8AA, 2AAA, 2 C Adapters, 2 D Adapters, Advanced Individual Battery Charger and Plastic Storage Case (case color may vary) https://www.amazon.com/dp/B00JHKSLSW/ref=cm_sw_r_cp_apa_i_qTdEDbHAKNZ3H


One of the best purchases I've ever made for around the house and for years now I've just kept recharging the supplied AAs

What temp are you using and is the grasshopper/batteries new? Using on temp ~3-3.5(finishing off with one or two hits on 4-5) I have been able to get about three bowls with a brand spanking new battery. But I have found they degrade quite quickly and the threading between the body and the back end has to be really clean to get the most out of it. I just had mine out tonight and got two bowls with the first battery with a little left to go(was done after that). But carrying spare batteries is a must if your using your hopper on the go all day or sharing it. My hopper daily carry set up includes 1 spare battery and portable charger like the ones I'll link to bellow. I have had a lot of luck with this set up. https://www.amazon.com/gp/product/B00IZQRC34/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B01M5KU97Q/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Get rechargeable batteries instead. This is a great brand that a lot of gamers use and recommend and that I own as well. They will last longer than the battery packs and it's cheaper and you can use them in other things other than your controller.

http://www.amazon.com/Panasonic-K-KJ17MCC82A-eneloop-Advanced-Individual/dp/B00JHKSLSW/ref=sr_1_2?s=electronics&ie=UTF8&qid=1421184411&sr=1-2&keywords=eneloop+power+pack

https://www.reddit.com/r/lifehacks/comments/6dj2bk/comment/di391qx?st=J7OPYW4W&sh=7f63b3f6

This response is pretty great although not exactly addressing the penny hack.

Edit: apparently you can get spacers to utilize smaller batteries in larger configurations. https://www.amazon.com/gp/product/B00JHKSLSW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1&pldnSite=1

So they do, though it is $350. I'm imagining just how useful that could be though, you could take the thing camping or out on a picnic or out on the deck even. An extension cord is certainly cheaper though, I will admit. And while portable, it would be like 30lb with batteries.

I haven’t ordered any yet but this is the kind my friend got from amazon, says they work fine:

EBL D Size Battery Adapters, AA to D Size Battery Spacer Converter Case Use with Rechargeable AA Battery Cells - 4 Pack https://www.amazon.com/dp/B075CJT65G/ref=cm_sw_r_cp_api_i_t8fODb3Y8KEBF

I don't know any specs off hand, but I keep one of these in the car and in my pack for emergencies. Super compact and can charge a plethora of batteries.

https://www.amazon.com/dp/B01M5KU97Q/ref=cm_sw_r_cp_awdb_t1_8rQFAbV4S4PQS

Here is what you want:

1. Rechargeable Eneloops/AmazonBasics 1900mAh cells. The 1900mAh are the ones which have the lowest self discharge, and can keep their charge for years and years:
   https://www.amazon.com/gp/aw/d/B00CWNMV4G/ref=mp_s_a_1_5?ie=UTF8&qid=1527200729&sr=8-5&pi=AC_SX236_SY340_QL65&keywords=amazon+basics+aa
   
   
   2.C cell adapters:
   https://www.amazon.com/gp/aw/d/B00M9PXMQ8/ref=mp_s_a_1_2?ie=UTF8&qid=1527200351&sr=8-2&pi=AC_SX236_SY340_FMwebp_QL65&keywords=c+cell+adapter&dpPl=1&dpID=51f8oRJiOkL&ref=plSrch
   
   D cell adapters:
   https://www.amazon.com/gp/aw/d/B075CJT65G/ref=mp_s_a_1_5?ie=UTF8&qid=1527200429&sr=8-5&pi=AC_SX236_SY340_FMwebp_QL65&keywords=d+cell+adapter&dpPl=1&dpID=51fYPiEgDvL&ref=plSrch
   
   3.Get yourself some 18650 and a removable 18650 power bank. Their high energy density is extremely useful, and replaceable 18650s are crucial in a power bank, to charge phones, tablets, flashlights, etc.
   
   18650(buy 2 of them):
   https://liionwholesale.com/collections/frontpage/products/samsung-inr18650-30q-battery-15a-3000mah-flat-top-wholesale-discount-genuine-and-tested?variant=2915614724
   
   Power bank:
   https://www.amazon.com/gp/aw/d/B07D8KGK7V/ref=mp_s_a_1_1?ie=UTF8&qid=1527200572&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=xtar+pb2&dpPl=1&dpID=31NXXSVGQyL&ref=plSrch
   
   And finally, a charger. A bit overkill, but it can charge about every type if battery you know of, and can even analyze them:
   
   https://www.amazon.com/gp/aw/d/B07428G1G2/ref=mp_s_a_1_2?ie=UTF8&qid=1527200836&sr=8-2&pi=AC_SX236_SY340_FMwebp_QL65&keywords=zanflare+c4&dpPl=1&dpID=51ZEgO0qHRL&ref=plSrch
   
   I have everything except for the universal charger, and I can vouch for their quality and have confidence in them.

My charger came with the batteries, and I suggest you just buy a kit with it all. Something like this

I have had my Eneloop for over almost 15-years now starting with the Xbox 360. For 5 of those years, it sat in storage, and still works great!

This is... odd... but most curious. Well done!

For those looking for the product, theLANMU Battery Adapter for Dewalt 18V/20V Lithium Ion Battery. Apparently there is also a DEWALT DCB090 12V/20V Max USB Power Source (on brand) that only does USB out.

I'm not sure. I think what I used was a retrofit-type battery - the batteries that you started seeing on the market 5 - 7 years ago that were designed to fit in existing 18-volt NiCad tools (center battery). Those seem to be getting somewhat scarce, too. I imagine it's cheaper to build a cell pack with just the cells and no charging circuit, thus having more contacts between the pack and charger.

For what it's worth, Dewalt now sells a lithium pack to NiCad tool adapter, but it seems kinda bulky.

I'll be at Lowes later, and I'll see if I can match up what I used. For some reason, I didn't leave myself a note in the charger. I usually do that, reminding myself what I used and the date I built the device, but I really didn't expect the motor to handle the increased voltage more than a few months. I did notice, however, that the donor charger has only one LED (flashing = charging, steady = charged) and that most newer chargers have several indicators. That could help figure out which charger I butchered.

They make a 18v to 20V battery adapter, Dewalt doesn't advertise it but in works great and will make the 18V tools last another 10 plus years
https://www.amazon.com/gp/product/B016K1UD0E/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

I use a marine 2-bank 20a charger like this.

I like having it charge both banks of batteries when I've got the van parked for longer periods. As you can see, there are quite a few configurations depending on how many banks you want to charge and how many amps.

You can get inverter/charger combos but if you have an inverter that works for you I recommend just keeping them separate. Things can get much more complicated as soon as you combine them.

If you really want to leave it on for extended periods, you may want to look into a simple battery eliminator like this. This will allow you to plug in your sign and leave it on for as long as you'd like.

Edit: Looking closer at your picture I noticed that you need a 3 volt battery adapter, instead of the 4.5 volt adapter I initially linked. I had a bit of trouble finding a 3 volt version in AAA but here is one example. Sorry it's a bit pricey, I would think if you searched a bit more you could find a better deal on a 3 volt AAA battery eliminator.

Just a quick skim on Amazon and the 60v (as shown in the clip)... around 100usd for the 6ah, 200 for the 9ah and for whatever reason the 12ah is going for the same price as well. Just the battery, no charger.

I did get a few 18-20v adapters not too long ago and I'm super impressed what a new battery can do for the older tools. Not the most ergonomic, but def extends the life of the tool.

I agree about staying OEM. I wouldn't venture into off-brand for batteries or chargers.


There are certainly a few chargers to choose from:

• M18 6-Pack Sequential Charger 48-59-1806. | $100 at Home Depot. | $129+ on Amazon. Allows you to attach up to 6 M18 batteries and then charges them sequentially.
  
  
  
• M18 & M12 Rapid Charge Station 48-59-1807. | $170 at Home Depot. | $191.96 + Shipping on Amazon. Can hold up to 3 M18 batteries and 3 M12 batteries at once, and will charge 3 batteries simultaneously.
  
  
  
• M18 & M12 Multi-Voltage Charger 48-59-1812 | $60 at Home Depot. | $29.93 shipped on Amazon. This is the standard charger that usually comes with the M18 kits and combo's.
  
  
  
• M18 & M12 Rapid Charger 48-59-1808 | $80 at Home Depot. | $42.55 shipped on Amazon. This is the newer, rapid charger version of the previous one. This one is bundled with the 9.0AH kits.
  
  
  I have the last two, the Multi-Voltage Charger and the Rapid Charger. Before purchasing any tools, I was disappointed in how difficult it was to find good reviews and charging times for the Milwaukee batteries and chargers. As in I was unable to do so, but I had a strong feeling the Makita batteries/chargers were much faster. I have not used my tools enough to get average charge times from either charger for comparison yet, but both have charged my batteries more quickly than I initially expected.
  
  EDIT - Reddit formatting kicked my butt.

It's an Opus BT-C3400

https://www.amazon.com/gp/product/B015LB8DFG/

It's very similar looking to the Maha c9000 or the La Crosse Technology BC-700 Alpha Power Battery Charger. Even how the functions work. It has some features that are different, and it has a fan. It can take almost any type of battery, AA, AAA, 16340, etc. I've very pleased with it. I've put in 18650's backward, and it has protection for that.

Oh haha... you can typically find adaptors that fit the battery of your platform that have a 12v barrel jack. I just cut the leads from my vex and added a male barrel jack that fits.

The specific one I use is a non branded eBay find. Just search something like “20v (18v Milwaukee) to 12v dewalt battery adapter.

Something like this

LANMU Battery Adapter for Dewalt 18V/20V Lithium Ion Battery,TS100 Soldering Iron,USB Charger for Dewalt,Power Source,Power Supply for Dewalt DCB090 DCB091 https://www.amazon.com/dp/B07DZZLH7Z/ref=cm_sw_r_cp_api_i_DAYsDbMD32P0S

https://smile.amazon.com/gp/product/B00JHKSLSW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

I have this set of rechargeable batteries that came with some C and D spacers. They work great.

The cheapest and easiest thing would be to buy a 4000 watt generator..

You've made it clear you don't want to run a generator. You'll want at least 120-200 amp hours in batteries. Pulling 30a, on one battery from 100% to 40% will kill that battery real quick. Having two will spread the load and extend the lifetime of the batteries. Wire a 10 amp battery charger that you plug an extension cord into every night.

Have a 4000 watt inverter, pure sine not modified, otherwise you will use 120-150 amps in battery power, just to get 60 amps into the scooters (massive efficiency loss). Have that hooked up to your two deep cycle batteries. Run a power strip and plug in all your scooter chargers. Then when your home plug in the shore power to recharge your batteries.

OR BUY A GENERATOR

https://www.amazon.com/dp/B01BOX86HU/ref=cm_sw_r_other_apa_azrkzb2PCWTGS

I lucked out and think mine came with some battery charger I got. They make them for D as well obviously.

They make all kinds of 18650 battery holders, some even look like giant AA battery holders, only problem is the cheaper ones have a very poor electrical conductivity. So due to resistance with the holder, each cell would only be able to do ~1.5-2A. Even the Vruzend v1.5 kits have a tough time with resistance, they recommend 3.5A max per cell.

Vruzend 2.0 is the recommended option, but pricey. I suppose it pays off in the long run if you plan to put a lot of miles on the battery and will go through cells quickly. I've also seen people using these brackets with nickel strips, but instead of spot welding, using strong magnets to hold the strips on the cell. No idea how well it works, but I've seen it done.

Where can I find more info about this? I just got my dad two new 20v XR tools and an adapter so he can use his old 18v tools with the new batteries. His 3 old NiCad batteries are about dead and swapping them out for this would be much better than just recycling them.

He already has a charger for the new kit he bought. I wonder if he could swap out a new charger for something else when he exchanges his batteries?


Edit:
DEWALT DCA2203C 20-Volt MAX Battery Adapter Kit for 18-Volt Tools https://www.amazon.com/dp/B016K1UEPS/ref=cm_sw_r_cp_apa_w29ZzbK47KTXH

So is it basically just $20 off this when you swap the old batteries? That's not a ridiculous deal, but it's still better than getting nothing for the old ones.

It's worth it just for tint and CRI alone. I'd recommend a quality battery charger like the Xtar MC1 Plus or Xtar VC2S. If you need 14500s get a bunch from Illumn. These VapCells are the highest capacity 14500s on the market (so far).

Get an adapter. Then buy the wiggly saw with a battery, they usually come with one free.

If you do go that route, you can save a lot on the printer of time by just buying pre-made 18650 holders. They're really cheap now.

The "Customers who viewed this item also viewed" display at the bottom of the page also has links to products that are probably related to other people building home-built powerwalls (charge controllers, hardware, and the like)

thanks for posting! link without tracking: https://www.amazon.com/AFI-2720A-Board-Battery-Charger/dp/B079SZFFL2

I’ve had good luck with the C and D sizes from EBL brand on Amazon, but they aren't cheap.

If long runtimes aren’t necessary, you can also use adapters to change AA batteries to larger sizes.

If you need C batteries get AA to C adapters. Buy lithium AA’s, long lasting and better in cold weather.

https://www.amazon.com/LampVPath-Battery-Adapter-Spacers-Converter/dp/B01BOX86HU/ref=mp_s_a_1_4?ie=UTF8&qid=1537038078&sr=8-4&pi=AC_SX236_SY340_QL65&keywords=aa+to+c+battery+adapter&dpPl=1&dpID=51h5rqCImqL&ref=plSrch

https://www.amazon.com/Milwaukee-48-59-1806-Pack-Sequential-Charger/dp/B00BYGHV0Q

Why make it when it's already been made? It even has a special plug to connect a second M12 charger.

I got this one for my 660 and it works really really well

Amazon Anewpow 4400mAh

I don't know how it will work with a 980 given the other posters comment about the voltage.

I got mine from Amazon. I got this exact package went it was on sale for $17. It goes on sale a few times a year. I'd keep an eye out on slick deals for it, they sell out pretty quickly. I wouldn't buy it for $33, but at $25 or lower sure.

You might be able to use something like this: https://www.amazon.com/dp/B076MZQ42P/

Maybe you don't need power? You could use something like https://www.amazon.com/DEWALT-DCB1800B-Portable-Power-Station/dp/B01H41SDGU and LED work lights

If you have electronic stores near you you should be able to just grab a battery pack like this one:

http://www.amazon.com/1-5V-Battery-Holder-Black-Leads/dp/B00E0IXRUS/ref=sr_1_1?ie=UTF8&qid=1426098517&sr=8-1&keywords=battery+holder

in case you didnt know this exists... dewalt makes an adapter that allows you to run their newer cells in old nicad tools.

https://www.amazon.com/DEWALT-DCA1820-Dewalt-Battery-Adapter/dp/B016K1UD0E

of course this would be more expensive than creating something yourself.

Is this

http://www.amazon.com/Panasonic-NCR18650B-3400mAh-Rechargeable-Battery/dp/B00QCEA6KW/ref=pd_sim_23_7?ie=UTF8&dpID=41lzMAmGpTL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=0DFBTGQ5Q4V5EXYK53WM

with this

http://www.amazon.com/gp/product/B00WJGR1XM?psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=A291SI22FJYAZO

a pretty good combination? I doubt I'm going to own more than one flashlight (famous last words)

This is a portable vacuum on top of an RC flatbed truck, if anyone's looking to replicate it.

Here are some options:

RC flatbed trucks

$17 https://www.amazon.com/Remote-Control-Tractor-Trailer-Flatbed/dp/B00O3KV1OC

$33 https://www.amazon.com/Construction-Trailer-Semi-Truck-Removable-Excavator/dp/B00QAWUE5S/

$116 https://www.amazon.com/Fistone-Mercedes-Benz-Semi-Trailer-Engineering-Electronics/dp/B0722VMP5X

Portable Vacuums

$100 https://www.amazon.com/DEWALT-DCV580-Cordless-Wet-Dry-Vacuum/dp/B00CP8DF3O

$130 Vacuum Battery https://www.amazon.com/DEWALT-DCB204-2-Premium-Li-Ion-Battery/dp/B00BQHOI6S

Lowes has the kit in Stock for $149 which includes an adapter, 2 batteries and charger.

https://m.lowes.com/pd/DEWALT-20V-Max-Battery-Adapter-Kit-for-18V-Tools/999981802

Amazon also carries just the adapter for $37

https://www.amazon.com/dp/B016K1UD0E/ref=cm_sw_r_cp_apa_lmUDybW194P5R

https://www.amazon.com/DEWALT-DCA1820-Dewalt-Battery-Adapter/dp/B016K1UD0E

This is what you want.

Alternatively: https://www.amazon.com/Panasonic-KJ17MCC82A-eneloop-Adapters-Individual/dp/B00JHKSLSW/ref=mp_s_a_1_4?ie=UTF8&qid=1542678425&sr=8-4&pi=AC_SX236_SY340_QL65&keywords=rechargeable+battery+set&dpPl=1&dpID=51qPqRlNGpL&ref=plSrch

Here ya go!

LampVPath 10PCS AA to C Size Battery Adapter Case, AA to C Size Spacers, AA to Size C Battery Adapter Converter Case(10 Pack Black)

https://www.amazon.com/DEWALT-DCA1820-Dewalt-Battery-Adapter/dp/B016K1UD0E

got you fam.

I've something similar to this (but not this... can't find what I used) to power PAs for wedding ceremonies and parade floats.

https://www.amazon.ca/DEWALT-DCB1800B-Flexvolt-Portable-Station/dp/B01H41SDGU

https://www.amazon.com/Xantrex-802-1500-XPower-Portable-Powerpack/dp/B00005RHQQ

Could also check your local rental houses.

I think you need this

Milwaukee 48-59-1806 M18 Six Pack Sequential Charger https://www.amazon.com/dp/B00BYGHV0Q/ref=cm_sw_r_cp_api_i_KaQKDbR9S0A41

Actually you know they make adapters for putting the new lithium ion 18V batteries on older dewalt drills.

https://www.amazon.com/DEWALT-DCA2203C-20-Volt-Battery-Adapter/dp/B016K1UEPS/ref=sr_1_1?ie=UTF8&qid=1493492565&sr=8-1&keywords=dewalt+20v+adapter+kit+for+18v

Use a power tool battery & charger.

18v to 20v adapter:
DEWALT 18v to 20v Adapter - Bare (DCA1820) https://www.amazon.com/dp/B016K1UD0E/ref=cm_sw_r_cp_apa_i_mNF2CbWH0QPS3

Get the 20v adapter kit

DEWALT 18v to 20v Adapter Kit (DCA2203C) https://www.amazon.com/dp/B016K1UEPS/ref=cm_sw_r_cp_api_i_iMVCCbANJHD97

Another trick to keep in mind if the batteries are dead is that they sell adapters to use the newer 20v batteries in the older 18v tools like this. They seem to hold a charge better and longer.

Looks like they hacked the 18v to 20v adapter, but I don't know if they hard wired into the vacuum or what after that. https://www.amazon.com/DEWALT-18v-20v-Adapter-DCA1820/dp/B016K1UD0E/

Because it's safe and convenient. This whole anti-USB charging brigade is a bit over the top man, for most, if not all, single 18650 mods it's literally no problem because there is no balancing required. It's with the dual or more batteries you run into problems.

OP sorry to see your problem. You can grab a simple single 18650 charger like the XTAR MC1 to charge those batteries externally, it works great.

Something to consider is their 18V to 20V battery adapter. Let's you buy into the new system and batteries for the lawn mower, but you can continue using your old 18v tools until they die.

https://www.amazon.com/DEWALT-DCA1820-Dewalt-Battery-Adapter/dp/B016K1UD0E

This will depend on how often you use the tools though. If it's a daily thing the added bulk of the adapter could get annoying quick.